Sample Essay on Genetic Drift

Genetic Drift

The term genetic drift is applied in the genetics of population and it refers to statistical drift that is noted with time of gene frequencies within a population which is as a result of random sample effects in successive generations’ formation. This evolution mechanism occurs as a result of random chance and not natural selection.

In the case of genetic drift, the population experiences changes in frequency of a specified allele which is triggered by arbitrary luck instead of adaptation need. Consequently, it is different from natural selection through which allelic frequency gets altered on the basis of the fittest genes which survive while the weaker genes die off. The phenomenon of genetic drift usually occurs among small populations while larger populations are often subjected to natural selection.

A genetic variant or allele is the gene component that produces a particular trait. A good example is the existence of both white and red worms within the same population. If these two worms mate, each passes an allele to the offspring white or red forming a gene. The strong or dominant allele determines which traits the new born worm is going to have. In the event the white one is dominant, then the new worm is going to be white as well and vice versa.

During instances when the worm gets two similar recessive alleles, then it exhibits recessive features. Note that while genetics is complex compared to this example, it provides the general concept of what genetic drift is all about. Often, genetic drift causes gene variants to completely disappear and can also cause genetic variation. Whenever there are a few allele copies, genetic drift effect is larger and whenever the copies are more the effect is less. Debate has always been rife on the comparative importance of natural selection versus that of neutral processes such as genetic drift.

The view held by Ronald Fisher was that genetic drift plays a crucial role in evolution and for decades, this view was held as the dominant one. The debate was however rekindled by Motoo Kimura when he came up with the neutral molecular evolution theory which states in most cases where there is a change in genetics spread across the population, the cause if genetic drift.

Genetic drift also occurs as a result of random sample errors. An error arises when the sample exhibits results that are different from what the entire population exhibits. For instance in the case where scientists have 50 red and white forms then they select 10 randomly, the sample is small and hence, the alleles that are passed in the group does not even out as would be the case in a group consisting of 100 worms.

Interested in buying an essay that is perfectly written and original such as this? You have come to the right place for assistance because at Essays Experts we have competent, talented and experienced writers working for us.

We hire our writers after they have gone through a series of tests to prove they are great at carrying out research work and writing. Therefore, rest assured the paper we deliver is going to be 100% tailored to match your expectations.

We alsopride ourselves in having a team of talented editors who check each paper for grammar and typo errors what is more the quality assurance team will ensure your paper is 100% unique. Go on, get in touch with us today and it will be the best decision you ever made!

About Essays Experts

Are you looking for Homework Writing Help? Are you struggling to write your Assignment? www.EssaysExperts.net offers homework writing help services in all subjects. Our writing professionals are qualified to handle any type of assignment, from essays, term papers, research papers, projects, course works and case studies among others. Do you need to buy Custom Written Sample Papers? Look no further; our company offers high quality custom-made papers, written by professionals in different fields at affordable prices. Each pre-written custom paper costs $14.99 only. Contact us today!

What you can read next

Search

Live Chat

Our Services in brief

Are you looking for Homework Writing Help? Are you struggling to write your Assignment? www.EssaysExperts.net offers homework writing help services in all subjects. Our writing professionals are qualified to handle any type of assignment, from essays, term papers, research papers, projects, course works and case studies among others. Do you need to buy Custom Written Sample Papers? Look no further; our company offers high quality custom-made papers, written by professionals in different fields at affordable prices. Each pre-written custom paper costs $14.99 only. Contact us today!

Affordable and Secure

Do you like the Quality of this sample? Click on the button below to ORDER a non-plagirized paper now: